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Super Precision Angular Contact Ball Bearings 71811 ACD/P4DBA

Super Precision Angular Contact Ball Bearings 71811 ACD/P4DBA

The 71811 ACD/P4DBA is a super precision angular contact ball bearing with a 55mm bore and 72mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and comes in a matched set of two bearings for balanced performance.

This bearing handles radial loads up to 3510 lbf and spins smoothly at speeds up to 34,000 RPM, thanks to its phenolic cage and extra-light preload. Its open design allows for easy lubrication and maintenance.

The P4 tolerance class ensures high precision, making it ideal for applications like machine tool spindles or high-speed robotics. It operates reliably in temperatures from -30°C to 110°C.

Weighing just 0.16kg, it’s lightweight yet robust, and interchangeable with SKF bearings for convenient replacements. Compliant with industry standards, it’s a dependable choice for precision engineering needs.

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Product Parameters

  • Part Number 71811 ACD/P4DBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 18 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 3510 lbf
  • Static Radial Load 4590 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.16 kg
Super Precision Angular Contact Ball Bearings 71811 ACD/P4DBA dimension drawing
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Features

Performance Features of 71811 ACD/P4DBA Bearing

71811 ACD/P4DBA Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.

The matched arrangement of two bearings in a DB configuration ensures stability and accuracy in high-speed operations.

Made from chrome steel, 71811 ACD/P4DBA Bearing offers excellent durability and resistance to wear.

With a maximum speed of 34,000 rpm, it delivers reliable performance in demanding conditions.

Application

Practical Applications of 71811 ACD/P4DBA Bearing
In high-speed machine tools, 71811 ACD/P4DBA Bearing excels due to its super precision and angular contact design, ensuring smooth operation under heavy loads. The matched arrangement of two bearings enhances stability, making it ideal for spindle applications.

Where Is 71811 ACD/P4DBA Bearing Used?
You’ll often find 71811 ACD/P4DBA Bearing in automotive transmissions, where its extra light preload reduces friction and improves efficiency. The phenolic cage material also helps withstand high temperatures common in engine compartments.

Optimized for Performance: 71811 ACD/P4DBA Bearing
For robotics and automation, 71811 ACD/P4DBA Bearing offers reliable angular contact support, crucial for precise movements in robotic arms. Its P4 tolerance class ensures consistent performance in demanding industrial environments.

Medical vs Industrial: Where 71811 ACD/P4DBA Bearing Excels
In medical imaging devices, 71811 ACD/P4DBA Bearing’s chrome steel construction provides durability and precision. Meanwhile, in industrial pumps, its high-speed capability and load handling make it a dependable choice.

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